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A research analyst for the Center for Naval Analyses offers a rare historical account of the Royal and U.S. Navies' involvement in one of the greatest amphibious assaults of modern history. It is a story of cooperation and, at times, discord, between the two navies as they planned the naval portion of the Allied invasion of Normandy. With the evolution of amphibious warfare as a backdrop, the book has sufficient technical detail to satisfy the modern-day practitioner of amphibious warfare, yet is written in a style that makes it accessible to the general public.

Thoroughly researched at the U.S. National Archives and the Naval Historical Center, the book takes the reader from the initial plans created by the Anglo-American Allies in 1942, through the first draft of Operation Overlord, to the final naval plan set down in 1944. It then presents a detailed description of the invasion itself. Christopher Yung covers every obstacle confronted by the naval planners, from the shifting tides of the English Channel to overcoming the European coastal defenses and dealing with the submarine threat. Despite his attention to historical detail, he brings to life the personalities of those who brought Operation Neptune from concept to reality.

Christopher Yung specializes in the analysis of amphibious and expeditionary operations at the Center for Naval Analyses and has conducted numerous studies for the U.S. Navy and the U.S. Marine Corps. He received his Ph.D. from the School of Advanced International Studies at Johns Hopkins University.